The ScummVM team is proud to announce that Riven: The Sequel to Myst is finally ready for its testing period. If you want to help with the tests, use the latest daily build of ScummVM to play the Windows or Mac version of the game. Please report the issues you encounter on our bug tracker. Be sure to follow our testing and bug reporting guidelines.

I have just installed and run Riven under Mac OS 10.12.6 (Sierra) using a Riven installer found in post #1 of this website:https://forums.ubi.com/showthread.php/986133-Mac-Riven-Installer-for-Mac-OS-X-on-Intel-Macs?p=10482368&viewfull=1#post10482368It will install SCUMM VM version 2.1.0 onto your hard disk or SSD, IF you have available a purchased copy of RIVEN, either the 10th anniversary DVD, or the original 5-CD set. The installer has to be able to access the data files to complete the installation. I found that once that is done, playing Riven is easy. It will come up in full screen, although that can later be changed on the Options screen of Scumm VM. (Control-F5 will take you to the save menu and other options.)